<>Hi, I'm Hector Marquez</>

Senior Javascript Engineer
& Tech Architect

<>With over 15 years of experience, I specialize as a Senior Front-End & JavaScript Engineer, working with companies across the USA, Europe, and Latin America. I focus on modern web technologies like React, Angular, Astro, NodeJS, and TypeScript, and am passionate about building scalable solutions and adopting cutting-edge technologies.</>

See How I Can Help

+15

Years of
Experience

+50

Project
Completed

+10

Countries
Worked

+18

Courses &
Certifications

• What I Do

Full-Stack Solutions to Build, Modernize, and Scale Your Product

Full-Stack
Development

I design and build complete web applications — from backend APIs to intuitive, scalable frontends. I work with technologies like React, Node.js, GraphQL, MongoDB, and Redis to bring reliable, modern software to life.

Modernization &
System Upgrades

Still using outdated tools? I help teams move from legacy systems to modern solutions. Whether it’s upgrading from Angular to React or restructuring a monolithic app into scalable services, I make the transition smooth and efficient.

Technical Architecture &
Team Guidance

I support growing teams by designing clear, maintainable software architecture and sharing practical guidance to help developers build with confidence and long-term vision.

Let’s Work Together

I'm always excited to take on new challenges and collaborate on great ideas.
Have a project in mind? Let’s talk.

Submit Your Requirements

Book a Free Consultation

• Client's Testimonials

What People Are Saying About My Work

“Héctor is a talented developer with a strong understanding of React. He’s also a quick learner and a great team player. I highly recommend him to any team needing his skill set.”

Franco Cerutti

Cloud Software Architect
Caylent

“Héctor’s command of design patterns and best practices is impressive. His code quality, peer code reviews, and commitment to continuous learning made a big impact on our project.”

Augusto Lezchik

Sr. Project Manager
Darwoft

“Héctor is very professional and skilled in .NET, CSS, XHTML, and JavaScript. He’s a great colleague and a solid web developer—I really appreciate his work.”

Víctor García

Software & Lead Developer
Simple [A]

Have a project in mind?
Let’s talk.

Whether you’re building a new product, scaling your system, or improving your frontend, I can help you move forward with clarity and confidence.

Submit Your Requirements Book a Free Consultation